Apply cargo clippy --fix cleanups

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/log.rs

@@ -21,7 +21,7 @@ pub fn init() {
     match OpenOptions::new().create(true).append(true).open(&path) {
         Ok(f) => {
             *LOG.lock().unwrap() = Some(f);
-            log(&format!("=== TUI-WM startad ==="));
+            log(&"=== TUI-WM startad ===".to_string());
         }
         Err(e) => eprintln!("log::init: kunde inte öppna {:?}: {}", path, e),
     }